var developer = new Developer{ Title = "Software Engineer", Backend = ["C#", ".NET", "PostgreSQL"], Mobile = ["React Native", "Expo"], AiWorkflow = "Claude Code", WritesTests = true, Passionate = true, NeedsCoffee = true,};What do you want to build?
From C# Fundamentals to Production .NET APIs
A Structured, Step-by-Step Path to Job-Ready Backend Development
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C# and Modern .NET Fundamentals
Learn C# 14 on .NET 10 — the Current Long-Term Support Release
Object-Oriented Design: Classes, Inheritance, Polymorphism, and Interfaces
Records, Pattern Matching, Generics, Delegates, Events, and LINQ in Depth
Build Production REST APIs with .NET
Build One Real Ecommerce API End to End: FuelUp, With ASP.NET Core on .NET 10
PostgreSQL and EF Core, Identity and JWT Auth, Validation and ProblemDetails
Production Practices, Then Containerize With Docker and Deploy to Azure
Testing C# with xUnit
xUnit End to End: Facts, Theories, Data-Driven Tests, and Fixtures
Decide What Actually Deserves a Test — and What Does Not
Test Doubles and Mocking With NSubstitute, Plus the Antipatterns to Avoid
SQL Server for .NET Developers
T-SQL From First Query to Window Functions and CTEs
Indexes, Execution Plans, Transactions, and Query Tuning
SQL Server With EF Core and Dapper, in Docker and on Azure SQL
Microsoft Azure for .NET Developers
Deploy ASP.NET Core to App Service and Containers With the Azure CLI
Azure SQL, Blob Storage, Key Vault, Managed Identities, and Entra ID
Functions, Service Bus, Application Insights, Bicep, and CI/CD
Learn C# and Modern .NET in 12 Video Course Sections
- 1
C# and .NET Foundations
- 2
Variables, Types, Operators, and Control Flow
- 3
Collections, Strings, and Everyday C#
- 4
Object-Oriented Programming with C#
- 5
Inheritance, Polymorphism, and Interfaces
- 6
Modern C# Types and Pattern Matching
- 7
Generics and Reusable Code
- 8
Delegates, Lambdas, and Events
- 9
LINQ in Depth
- 10
Exceptions, Nullability, and Resource Management
- 11
Asynchronous Programming
- 12
Writing Maintainable Modern .NET Code
Build Production REST APIs in 10 Video Course Sections
- 1
REST & HTTP Essentials
- 2
ASP.NET Core Project Setup & Request Pipeline
- 3
Controllers, Routing & Request Handling
- 4
DTOs, Mapping & API Contracts
- 5
Validation & Production Error Handling
- 6
Dependency Injection & Configuration
- 7
PostgreSQL & Entity Framework Core
- 8
Authentication & Authorization
- 9
Production API Practices
- 10
Docker, Azure & Shipping the API
Course Project: The FuelUp API
A real ecommerce backend for a protein powder and protein bar brand, built from the first endpoint to a deployed API.
REST API Design
Product catalog, cart, and order endpoints with controllers, routing, DTOs, and clear API contracts in ASP.NET Core on .NET 10.
Validation & Error Handling
Reject bad orders and invalid quantities, and return consistent errors with ProblemDetails.
PostgreSQL & EF Core
Model products, customers, and orders with relationships, migrations, and paginated catalog queries, and avoid the N+1 problem.
Authentication & Authorization
ASP.NET Core Identity, JWTs, and role, policy, and resource-based authorization so admins manage the catalog and customers only see their own orders.
Production Practices
Structured logging, health checks, OpenAPI documentation, rate limiting, and the OWASP API essentials.
Docker & Azure Deployment
Containerize the API with Docker and deploy it to Azure.
Then Prepare for the Technical Interview
Data Structures & Algorithms
- Every Topic Taught Twice: Concept Video, Then Build It From Scratch
- Every Data Structure Built From Scratch in Modern C#
- Big O, Arrays, Strings, Linked Lists, Stacks, Queues, and Hash Tables
Coding Interview Problems
- 141 Real Interview Problems Across 12 Core Topics, Easy to Hard
- Every Problem Posed First So You Can Attempt It Before Seeing Any Code
- Step-by-Step C# Solutions with Time and Space Complexity
System Design Interview
- A Repeatable Framework for Any System Design Interview
- Scaling Fundamentals: Load Balancing, Caching, CDNs, and Replication
- Data at Scale: Sharding, Consistency, CAP, and Choosing the Right Database
Start Learning for Free, Master with Premium
Build your foundation with free courses, then level up with expert training.
JavaScript for Beginners
JavaScript Essentials: A 3.5-Hour Course for Complete Beginners
JavaScript Interview Essentials: A 61-Page Prep Guide for Beginners
JavaScript Pro
JavaScript Mastery in 9.5 Hours: The Intermediate Developer's Course
Mastering JavaScript: A 600-Page Guide for Intermediate Developers
JavaScript Interview Success: A 120-Page Study Guide for Skilled Intermediates
Meditation Mobile App - React Native
2-Hour Video Course: Build a Mobile App with React Native, Expo, and NativeWind
Full Access to Project Source Code and GitHub Repository
About Your Instructor
Hi, I’m Steven Garcia, a software engineer and educator. I help developers build and ship production software, from C# and .NET backends to React Native mobile apps, with an AI-assisted workflow. I’ve helped thousands of learners through my courses, FreeCodeCamp collaborations, and real-world projects.
Why Learn From Me?
- • Computer Science Degree – Long Beach State University graduate with a strong technical foundation
- • Software Engineer – Industry experience building and shipping production software
- • C# & .NET Backend Focus – Building in-depth courses on C#, ASP.NET Core, EF Core, and testing with xUnit
- • Founder of FitFuel AI – Built and launched a React Native subscription-based mobile app
- • Course Creator & Educator – Created high-quality coding courses with FreeCodeCamp (960,000+ views)
Teaching What Works – I don’t just teach theory—I build real software and help you do the same
My mission is simple: Help developers build real, production-quality software and gain the skills to land the job or launch the product they’re aiming for.
Start Learning for Free, Master with Premium
Build your foundation with free courses, then level up with expert training.
Zero to Launch — Founding Student Presale
$99
$299
One-time payment · 67% off the regular lifetime price
21 hours of Zero to Launch are recorded and ready to watch right now, finishing at roughly 25 hours. Founding students get every remaining lesson as it lands — plus lifetime access to every other course on the site, including the ones I haven't built yet.
- 21 hours of video ready to watch today
- Grows to ~25 hours — the final 6 lessons included as they land
- Lifetime access to every course, not just this one
- Every future course included free, forever
- MVP workbook + AI development workflow guide
- Full finished project source code
Founding pricing ends April 30, 2027.
30-day money-back guarantee. If it's not for you, email me within 30 days and I'll refund you in full. Refund policy.
Prefer a subscription? Monthly, annual, and regular lifetime plans are below.
All-Access Monthly Subscription
$25.00
USD
Billed monthly
- Full Access to Every Course
- Expo & React Native Development
- AI-Assisted Workflow with Claude Code
- Mobile App Monetization Strategies
- Growth & Marketing Courses
- New Courses Added Regularly
- Cancel Anytime
All-Access Annual Subscription
$149.00
USD
Billed annually
- Save 50% vs monthly billing
- Full Access to Every Course
- Expo & React Native Development
- AI-Assisted Workflow with Claude Code
- Mobile App Monetization Strategies
- Growth & Marketing Courses
- New Courses Added Regularly
Lifetime Access
$299.00
USD
Billed once
- Lifetime Access to Every Course
- All Future Courses Included Free
- Expo & React Native Development
- AI-Assisted Workflow with Claude Code
- Mobile App Monetization Strategies
- Growth & Marketing Courses
- One-Time Payment — Never Pay Again